Gravity & Orbits — Interactive Simulator

Choose a System

The full Solar System uses real physics distances with a compressed display scale so every planet and orbit remains visible.

Gravity

Velocity Orbit Path Grid Labels Values

☀️ Star mass1.00 × Sun

🌍 Planet mass1.00 × Earth

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Question 1

Choose a category and enter the known orbital values.

Try your own problem

Live simulation system

Choose calculation

Sun + EarthA planet held in orbit by the Sun's gravity

Click any planet for cinematic view

Relative orbital motionNormal · 1×

Gravity force Velocity Path

Orbital speed29.8 km/s

Gravity force3.54 × 10²² N

Distance1.00 AU

Orbit period365 days

Try increasing the central body's mass. The force becomes stronger and the orbit bends more sharply.

Gravity pulls inward while velocity points sideways. Together they create a continuously curved orbit.

Score: 0 / 0

Watch the direction of the blue and green arrows.

F = Gm₁m₂ / r²

Enter values on the left, then calculate the answer.

G = 6.67430 × 10⁻¹¹ N·m²/kg²
1 AU = 1.496 × 10¹¹ m
Earth mass = 5.972 × 10²⁴ kg